I don't like spending too much time making parts for mowers if you are selling them.
Yes I agree with Norm it works out cheaper sometimes to buy a mower for an air cleaner than to buy a new filter.
Interesting AVB ,the struggle to get a good price for a second hand mower in Tennessee USA. I was sent some mower prices about a year ago from Hawaii ,in Tennessee mowers must be a lot cheaper.
50 US dollars is about 69 Aussie dollars , I don't sell mowers under $100 ($73 US Dollars) and find you get a lot less tyre kickers that way.
I have seen Vintage Lawn Boy mowers get good prices in the USA lately.
Yes Mowers are selling well in Aus at this time of year Sparker.